<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>表格隔行换色</title>
		<script>
			window.onload = function () {
				var getTbl = document.getElementById("tbody");
				var leng = getTbl.tBodies[0].rows.length;
				for(var i = 0; i < leng ; i ++){
					if (i % 2 == 0) {
						getTbl.tBodies[0].rows[i].style.backgroundColor = "pink";
					}else{
						getTbl.tBodies[0].rows[i].style.backgroundColor="blue";
					}

				}
			}
		</script>
	</head>
	<body>
		<table border="1" width="500" height="50" align="center" id="tbody" >
			<thead>
				<tr>
					<th>编号</th>
					<th>姓名</th>
					<th>年龄</th>
				</tr>
			</thead>
			<tbody >
				<tr >
					<td>1</td>
					<td>张三</td>
					<td>22</td>
				</tr>
				<tr >
					<td>2</td>
					<td>李四</td>
					<td>25</td>
				</tr>
				<tr >
					<td>3</td>
					<td>王五</td>
					<td>27</td>
				</tr>
				<tr >
					<td>4</td>
					<td>赵六</td>
					<td>29</td>
				</tr>
				<tr >
					<td>5</td>
					<td>田七</td>
					<td>30</td>
				</tr>
				<tr >
					<td>6</td>
					<td>汾九</td>
					<td>20</td>
				</tr>
			</tbody>
		</table>
	</body>
</html>
